Clevis



w. PORTER.

CLEVIS.

APPLICATION FILED MAR. 16. 1920.

1 ,388,1 22 Patented Aug. 16, 1921.

A TTORNEYS oarrso STATES;

'WILLIAM PORTER, OF AURORA, OREGON.

.cLE i Applicationfiled March 16, 1920. Serial no. 366,259.

To all whom it may concern." I

Be itknown that I, WILLIAM PORTER, a citizen of the UnitedStates, and a resident of Aurora, in the county of Marion and State of Oregon, have invented certain new and useful Improvements in Clevises, of which the following is a specification.

My invention is an improvement in pin and clevis devices of that type used as a draft coupling, in agricultural implements, vehicles or the like.

An important object of my invention is to provide a device of the above named character which prevents the accumulation of dirt, sand or other foreign matter around the lock joint.

Another important object is to provide a device of this character which is self-locking in its action. 7

Another object of my invention is to provide a clevis, and pin device which may be i so constructed that there will be little liability of its catching on other working parts to which it may be connected.

A further object is to provide a pin and clevis device whose locking action will not be materially affected by the weather or foreign matter and which will be extremely simple in construction, easily operated and inexpensive to manufacture.

In the drawings forming a part of this specification, and in which like numerals are employed to designate like characters throughout the same,

Figure 1 is a plan View of my invention partly in section showing the clevis and locking pin,

Fig. 2 is a side view of the same, and

Fig. 3 is a perspective view of the lock ing pin.

The preferred form of construction as shown in the accompanying drawings comprises a yoke 5 having its extremities provided with apertures 6 and 7 disposed in axial alinement and through which a looking pin 8 is adapted to pass. The length of the locking pin 8 is suflicient to bridge the distance separating the extremities of the yoke 5.

The locking pin 8 is provided at one end with a head 9, said head being cut away as shown at 10. An upwardly projecting knob 11 is formed upon the head 9 and may be provided with a ring 12 for bringing the locking pin 8 into and out of engagement with the yoke 5.

Specification of Letters'Patent. P tented Aug. 16, 1921. A

. As shown more clearly in Fig. "1," the .ex-

treinity apertured at 6 is provided with an oval recess 13 which is adapted'to receive the head'9. The greatest diameter of the opening formed by the recess 13 is parallel to the length of the yoke 5, thereby allowing the locking pin 8 a longitudinal movement within the recess 13 with respect to the yoke 55. A lug or projection 14 is formed integral with the yoke 5, and extends radially inwardly within the opening 6. This lug serves as a guide and look when the locking pin 8 is inserted through the opening 6. The head 9 is prevented from passing entirely through the opening 6, by virtue of its engagement with the back stop as shown at 16.

In order that the locking pin 8 may be swung at an angle, the opposite extremity of the yoke 5 has its inner edge surrounding the opening 7 curved outwardly as shown at 15.

In the operation of my invention, the locking pin 8 is inserted through the openings 6 and 7, and the opening 10 of the head 9 is brought into registration with the lug 14. In this position the head 9 will easily pass within the opening 6 until it engages the back stop 16. It will he noticed that the pin becomes locked within the clevis when any load is placed upon the pin, such as a double-tree or any other device that is used in connection with the clevis.

It is to be understood that various changes in the size, shape and arrangement of parts may be resorted to without departing from the spirit of the invention or the scope of the sub-joined claims.

I I claim:

1. In apin and clevis device, a clevis having a pair of eyes, one of which is provided on its inner surface with a recess elongated in the direction of the length of the clevis, a lug projecting into said eye at the rear thereof and overlying the elongated recess, the other eye being flared inwardly, and a pin having a head adapted to seat in the recess and provided with a cutaway portion adapted to register with the inwardly projecting lug of the clevis, and a handle mounted upon said head.

2. A device substantially as described, comprising a clevis having its arms provided with registering openings, one of which arms is provided with a lug projecting into its opening and has below its opening a recess elongated in the direction of the length of the clevis; and a pin having a head notched to receive said lug and adapted to be housed Within the recess, as and for the purposes set forth.

3. A device substantially as described, comprising 'a clevis having its arms provided With registering openings, one of -which arms is provided with a lug projecting into its opening, andhas beloiv'its opening an elongated recess; and a pin having a head notched to receive said lug and adaptjecting'radially Within said eye, and a back stop formed by an oval recess Within the eye; and a pin having an apertured head, said head adapted to engage the lug of the clevis.

WILLIAM PORTER. 

